OEM Cranks on 2004 Cake 4+?

I'm trying to replace the front rings and cassette on an 04 Cake 4+. The Bontrager cranks are so beat up and worn that the model or any serial #'s are gone from the crank and rings. I tried some XT rings that were laying around but they didn't line up correctly. Does anyone know what Bontrager series crank this would have been to order the proper replacement rings? Thanks.